Brake



Aug. 23, 1932. 1 V, BEND 1,873,103

BRAKE n Original Filed April 27, 1925 Patented Aug. 23, 1932 UNITED STATES PATENT oI-Ficfii- VINCENT BENDIX, OF SOUTH BEND, INDIANA, ASSIG-NOR TO BEND-IX BRAKE COMPANY, i

OF SOUTH BEND, INDIANA, A GOREORATION` OF ILLINOIS BRAKE Original application filed April 27, 1925, Serial N0.'26,036. Divided and this application led .Tune r26,

1930. Serial No.v 463,910.

This invention relates to brakes and more particularly to operating mechanisms for swiveled wheel brakes. The present application is a division of my co-pending application, Serial No. 26,036 filed April 27th, 1925.

One object of the invention is to provide a brake operating means in which'the detail parts are of simple form.

Another object of the invention is to provide an arrangement of means for increasing the leverage ratio of the brake operating levers. Y

@ther objects relating to novel features of construction will appear from the following description of one embodiment of the invention shown in the accompanying drawing, in which:

, Figure 1 is an elevational view partly in section showing my improved brake operating means installed on a portion of a vehicle wheel, and

Figure 2 is an enlarged view of the operating mechanism taken inthe direction of lines 2-2 of Figure 1.

The brake selected for illustration includes a drum 10, which is secured to a wheel (not shown) that revolves upon the spindle 12. The open side of the drum 10 is closed by a backing or supporting plate 14 secured to the steering knuckle that is pivotally mounted on one end of the axle 16 to swivel about a vertical aXis. Within the drum are brake shoes 18 which are expanded into contact with the drum by a cam 20. A rock shaft 22 having a serrated end is secured to the cam and projects outwardly through the backing plate 14 in which it is supported by a bearing 24 secured to the plate by a bracket 26. On the outer serrated end of shaft 22 is clamped a collar 28 having an upwardly projecting arm 30. The collar 28 has serrations corresponding to those of the shaft formed on its inte-v rior and after it has been arranged in its desired osition with respect to the shaft 22, it is loc ed in place by the clamping screw 32.

Immediately above the shaft 22 is a second shaft 34 secured in any desired manner to the backing plate 14 and upon which is pivotally mounted a double arm lever 36. Lever 36 is secured upon the shaft 34 by a nut 40 to pre- A vent its endwise displacement, but care should be taken that the arm 36 is not clamped against the support.

@ne arm 42 of the double arm lever pro-` ]ectsdownwardly Vand has a spherical end`V that contacts with the face vof the' upwardly progecting lever 30. 'i The other arm 44 eX- tends outwardly and downwardly to a posi- AIn the operation of the brake, when motion is imparted to lever 46, the flatted end contacts with the ball end of lever 44 and rotates it in a counterclockwise direction. The arm 42 will also beV moved and bear against the arm 30 in a manner to turn the cam 20 to eX- f pand the brake shoes 18. Y

In the present embodiment, lever 30 is shown with acurved Vface that will cause levers 30 and 36 to rotate at substantially the other shapes may be used. V ldhile I have illustrated and described one same angular speed, but it is apparent that V embodiment of the invention, it is understood that this showing and description are illustrative only and that I do not intend that the scope of the invention shall .be limited to this particular construction or otherwise, except Vinsofar as I have included such limitations within the. 'terms of the following claim.

Having thus describedthe features of the invention, what I claim as new and desire to secure by Letters Patent is A brake operating lever formed with a bearing, twoprojecting arms on the same side of the bearing, one of said arms having a greater length than the other, and the ends of said arms being. arranged in a line substantially radial of theV bearing.

In testimony whereof, I have hereunto signed my name. i

VINCENT' BENDIX. 

